diff options
Diffstat (limited to 'src/qml/jsruntime/qv4engine_p.h')
| -rw-r--r-- | src/qml/jsruntime/qv4engine_p.h | 382 |
1 files changed, 249 insertions, 133 deletions
diff --git a/src/qml/jsruntime/qv4engine_p.h b/src/qml/jsruntime/qv4engine_p.h index c0c88abaa5..4640f3f4cc 100644 --- a/src/qml/jsruntime/qv4engine_p.h +++ b/src/qml/jsruntime/qv4engine_p.h @@ -33,10 +33,22 @@ #ifndef QV4ENGINE_H #define QV4ENGINE_H +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + #include "qv4global_p.h" #include "private/qv4isel_p.h" #include "qv4managed_p.h" #include "qv4context_p.h" +#include "qv4internalclass_p.h" #include <private/qintrusivelist_p.h> namespace WTF { @@ -50,6 +62,7 @@ class QV8Engine; class QQmlError; class QJSEngine; class QQmlEngine; +class QQmlContextData; namespace QV4 { namespace Debugging { @@ -76,18 +89,16 @@ private: friend struct Heap::ExecutionContext; public: Heap::ExecutionContext *current; - Heap::ExecutionContext *currentContext() const { return current; } Value *jsStackTop; quint32 hasException; - Heap::GlobalContext *m_rootContext; - Heap::GlobalContext *rootContext() const { return m_rootContext; } MemoryManager *memoryManager; ExecutableAllocator *executableAllocator; ExecutableAllocator *regExpAllocator; QScopedPointer<EvalISelFactory> iselFactory; + ExecutionContext *currentContext; Value *jsStackLimit; quintptr cStackLimit; @@ -106,14 +117,19 @@ public: --jsStackTop; return jsStackTop->heapObject(); } + Value *jsAlloca(int nValues) { + Value *ptr = jsStackTop; + jsStackTop = ptr + nValues; + memset(ptr, 0, nValues*sizeof(Value)); + return ptr; + } IdentifierTable *identifierTable; QV4::Debugging::Debugger *debugger; QV4::Profiling::Profiler *profiler; - Value m_globalObject; - Object *globalObject() { return reinterpret_cast<Object *>(&m_globalObject); } + Object *globalObject; Function *globalCode; @@ -121,104 +137,206 @@ public: QQmlEngine *qmlEngine() const; QV8Engine *v8Engine; - Value objectCtor; - Value stringCtor; - Value numberCtor; - Value booleanCtor; - Value arrayCtor; - Value functionCtor; - Value dateCtor; - Value regExpCtor; - Value errorCtor; - Value evalErrorCtor; - Value rangeErrorCtor; - Value referenceErrorCtor; - Value syntaxErrorCtor; - Value typeErrorCtor; - Value uRIErrorCtor; - Value arrayBufferCtor; - Value dataViewCtor; - enum { NTypedArrayTypes = 9 }; // avoid header dependency - Value typedArrayCtors[NTypedArrayTypes]; - - Value objectPrototype; - Value arrayPrototype; - Value stringPrototype; - Value numberPrototype; - Value booleanPrototype; - Value datePrototype; - Value functionPrototype; - Value regExpPrototype; - Value errorPrototype; - Value evalErrorPrototype; - Value rangeErrorPrototype; - Value referenceErrorPrototype; - Value syntaxErrorPrototype; - Value typeErrorPrototype; - Value uRIErrorPrototype; - Value variantPrototype; - Value sequencePrototype; - - Value arrayBufferPrototype; - Value dataViewPrototype; - Value typedArrayPrototype[NTypedArrayTypes]; // TypedArray::NValues, avoid including the header here + enum JSObjects { + RootContext, + IntegerNull, // Has to come after the RootContext to make the context stack safe + ObjectProto, + ArrayProto, + StringProto, + NumberProto, + BooleanProto, + DateProto, + FunctionProto, + RegExpProto, + ErrorProto, + EvalErrorProto, + RangeErrorProto, + ReferenceErrorProto, + SyntaxErrorProto, + TypeErrorProto, + URIErrorProto, + VariantProto, + SequenceProto, + ArrayBufferProto, + DataViewProto, + ValueTypeProto, + SignalHandlerProto, + + Object_Ctor, + String_Ctor, + Number_Ctor, + Boolean_Ctor, + Array_Ctor, + Function_Ctor, + Date_Ctor, + RegExp_Ctor, + Error_Ctor, + EvalError_Ctor, + RangeError_Ctor, + ReferenceError_Ctor, + SyntaxError_Ctor, + TypeError_Ctor, + URIError_Ctor, + ArrayBuffer_Ctor, + DataView_Ctor, + + Eval_Function, + GetStack_Function, + ThrowerObject, + NJSObjects + }; + Value *jsObjects; + enum { NTypedArrayTypes = 9 }; // == TypedArray::NValues, avoid header dependency + + GlobalContext *rootContext() const { return reinterpret_cast<GlobalContext *>(jsObjects + RootContext); } + FunctionObject *objectCtor() const { return reinterpret_cast<FunctionObject *>(jsObjects + Object_Ctor); } + FunctionObject *stringCtor() const { return reinterpret_cast<FunctionObject *>(jsObjects + String_Ctor); } + FunctionObject *numberCtor() const { return reinterpret_cast<FunctionObject *>(jsObjects + Number_Ctor); } + FunctionObject *booleanCtor() const { return reinterpret_cast<FunctionObject *>(jsObjects + Boolean_Ctor); } + FunctionObject *arrayCtor() const { return reinterpret_cast<FunctionObject *>(jsObjects + Array_Ctor); } + FunctionObject *functionCtor() const { return reinterpret_cast<FunctionObject *>(jsObjects + Function_Ctor); } + FunctionObject *dateCtor() const { return reinterpret_cast<FunctionObject *>(jsObjects + Date_Ctor); } + FunctionObject *regExpCtor() const { return reinterpret_cast<FunctionObject *>(jsObjects + RegExp_Ctor); } + FunctionObject *errorCtor() const { return reinterpret_cast<FunctionObject *>(jsObjects + Error_Ctor); } + FunctionObject *evalErrorCtor() const { return reinterpret_cast<FunctionObject *>(jsObjects + EvalError_Ctor); } + FunctionObject *rangeErrorCtor() const { return reinterpret_cast<FunctionObject *>(jsObjects + RangeError_Ctor); } + FunctionObject *referenceErrorCtor() const { return reinterpret_cast<FunctionObject *>(jsObjects + ReferenceError_Ctor); } + FunctionObject *syntaxErrorCtor() const { return reinterpret_cast<FunctionObject *>(jsObjects + SyntaxError_Ctor); } + FunctionObject *typeErrorCtor() const { return reinterpret_cast<FunctionObject *>(jsObjects + TypeError_Ctor); } + FunctionObject *uRIErrorCtor() const { return reinterpret_cast<FunctionObject *>(jsObjects + URIError_Ctor); } + FunctionObject *arrayBufferCtor() const { return reinterpret_cast<FunctionObject *>(jsObjects + ArrayBuffer_Ctor); } + FunctionObject *dataViewCtor() const { return reinterpret_cast<FunctionObject *>(jsObjects + DataView_Ctor); } + FunctionObject *typedArrayCtors; + + Object *objectPrototype() const { return reinterpret_cast<Object *>(jsObjects + ObjectProto); } + Object *arrayPrototype() const { return reinterpret_cast<Object *>(jsObjects + ArrayProto); } + Object *stringPrototype() const { return reinterpret_cast<Object *>(jsObjects + StringProto); } + Object *numberPrototype() const { return reinterpret_cast<Object *>(jsObjects + NumberProto); } + Object *booleanPrototype() const { return reinterpret_cast<Object *>(jsObjects + BooleanProto); } + Object *datePrototype() const { return reinterpret_cast<Object *>(jsObjects + DateProto); } + Object *functionPrototype() const { return reinterpret_cast<Object *>(jsObjects + FunctionProto); } + Object *regExpPrototype() const { return reinterpret_cast<Object *>(jsObjects + RegExpProto); } + Object *errorPrototype() const { return reinterpret_cast<Object *>(jsObjects + ErrorProto); } + Object *evalErrorPrototype() const { return reinterpret_cast<Object *>(jsObjects + EvalErrorProto); } + Object *rangeErrorPrototype() const { return reinterpret_cast<Object *>(jsObjects + RangeErrorProto); } + Object *referenceErrorPrototype() const { return reinterpret_cast<Object *>(jsObjects + ReferenceErrorProto); } + Object *syntaxErrorPrototype() const { return reinterpret_cast<Object *>(jsObjects + SyntaxErrorProto); } + Object *typeErrorPrototype() const { return reinterpret_cast<Object *>(jsObjects + TypeErrorProto); } + Object *uRIErrorPrototype() const { return reinterpret_cast<Object *>(jsObjects + URIErrorProto); } + Object *variantPrototype() const { return reinterpret_cast<Object *>(jsObjects + VariantProto); } + Object *sequencePrototype() const { return reinterpret_cast<Object *>(jsObjects + SequenceProto); } + + Object *arrayBufferPrototype() const { return reinterpret_cast<Object *>(jsObjects + ArrayBufferProto); } + Object *dataViewPrototype() const { return reinterpret_cast<Object *>(jsObjects + DataViewProto); } + Object *typedArrayPrototype; + + Object *valueTypeWrapperPrototype() const { return reinterpret_cast<Object *>(jsObjects + ValueTypeProto); } + Object *signalHandlerPrototype() const { return reinterpret_cast<Object *>(jsObjects + SignalHandlerProto); } InternalClassPool *classPool; InternalClass *emptyClass; InternalClass *arrayClass; + InternalClass *stringClass; InternalClass *functionClass; InternalClass *simpleScriptFunctionClass; InternalClass *protoClass; InternalClass *regExpExecArrayClass; + InternalClass *regExpObjectClass; InternalClass *argumentsObjectClass; InternalClass *strictArgumentsObjectClass; - Heap::EvalFunction *evalFunction; - Heap::FunctionObject *thrower; + InternalClass *errorClass; + InternalClass *errorClassWithMessage; + InternalClass *errorProtoClass; + + EvalFunction *evalFunction() const { return reinterpret_cast<EvalFunction *>(jsObjects + Eval_Function); } + FunctionObject *getStackFunction() const { return reinterpret_cast<FunctionObject *>(jsObjects + GetStack_Function); } + FunctionObject *thrower() const { return reinterpret_cast<FunctionObject *>(jsObjects + ThrowerObject); } Property *argumentsAccessors; int nArgumentsAccessors; - StringValue id_empty; - StringValue id_undefined; - StringValue id_null; - StringValue id_true; - StringValue id_false; - StringValue id_boolean; - StringValue id_number; - StringValue id_string; - StringValue id_object; - StringValue id_function; - StringValue id_length; - StringValue id_prototype; - StringValue id_constructor; - StringValue id_arguments; - StringValue id_caller; - StringValue id_callee; - StringValue id_this; - StringValue id___proto__; - StringValue id_enumerable; - StringValue id_configurable; - StringValue id_writable; - StringValue id_value; - StringValue id_get; - StringValue id_set; - StringValue id_eval; - StringValue id_uintMax; - StringValue id_name; - StringValue id_index; - StringValue id_input; - StringValue id_toString; - StringValue id_destroy; - StringValue id_valueOf; - StringValue id_byteLength; - StringValue id_byteOffset; - StringValue id_buffer; - StringValue id_lastIndex; + enum JSStrings { + String_Empty, + String_undefined, + String_null, + String_true, + String_false, + String_boolean, + String_number, + String_string, + String_object, + String_function, + String_length, + String_prototype, + String_constructor, + String_arguments, + String_caller, + String_callee, + String_this, + String___proto__, + String_enumerable, + String_configurable, + String_writable, + String_value, + String_get, + String_set, + String_eval, + String_uintMax, + String_name, + String_index, + String_input, + String_toString, + String_destroy, + String_valueOf, + String_byteLength, + String_byteOffset, + String_buffer, + String_lastIndex, + NJSStrings + }; + Value *jsStrings; + + String *id_empty() const { return reinterpret_cast<String *>(jsStrings + String_Empty); } + String *id_undefined() const { return reinterpret_cast<String *>(jsStrings + String_undefined); } + String *id_null() const { return reinterpret_cast<String *>(jsStrings + String_null); } + String *id_true() const { return reinterpret_cast<String *>(jsStrings + String_true); } + String *id_false() const { return reinterpret_cast<String *>(jsStrings + String_false); } + String *id_boolean() const { return reinterpret_cast<String *>(jsStrings + String_boolean); } + String *id_number() const { return reinterpret_cast<String *>(jsStrings + String_number); } + String *id_string() const { return reinterpret_cast<String *>(jsStrings + String_string); } + String *id_object() const { return reinterpret_cast<String *>(jsStrings + String_object); } + String *id_function() const { return reinterpret_cast<String *>(jsStrings + String_function); } + String *id_length() const { return reinterpret_cast<String *>(jsStrings + String_length); } + String *id_prototype() const { return reinterpret_cast<String *>(jsStrings + String_prototype); } + String *id_constructor() const { return reinterpret_cast<String *>(jsStrings + String_constructor); } + String *id_arguments() const { return reinterpret_cast<String *>(jsStrings + String_arguments); } + String *id_caller() const { return reinterpret_cast<String *>(jsStrings + String_caller); } + String *id_callee() const { return reinterpret_cast<String *>(jsStrings + String_callee); } + String *id_this() const { return reinterpret_cast<String *>(jsStrings + String_this); } + String *id___proto__() const { return reinterpret_cast<String *>(jsStrings + String___proto__); } + String *id_enumerable() const { return reinterpret_cast<String *>(jsStrings + String_enumerable); } + String *id_configurable() const { return reinterpret_cast<String *>(jsStrings + String_configurable); } + String *id_writable() const { return reinterpret_cast<String *>(jsStrings + String_writable); } + String *id_value() const { return reinterpret_cast<String *>(jsStrings + String_value); } + String *id_get() const { return reinterpret_cast<String *>(jsStrings + String_get); } + String *id_set() const { return reinterpret_cast<String *>(jsStrings + String_set); } + String *id_eval() const { return reinterpret_cast<String *>(jsStrings + String_eval); } + String *id_uintMax() const { return reinterpret_cast<String *>(jsStrings + String_uintMax); } + String *id_name() const { return reinterpret_cast<String *>(jsStrings + String_name); } + String *id_index() const { return reinterpret_cast<String *>(jsStrings + String_index); } + String *id_input() const { return reinterpret_cast<String *>(jsStrings + String_input); } + String *id_toString() const { return reinterpret_cast<String *>(jsStrings + String_toString); } + String *id_destroy() const { return reinterpret_cast<String *>(jsStrings + String_destroy); } + String *id_valueOf() const { return reinterpret_cast<String *>(jsStrings + String_valueOf); } + String *id_byteLength() const { return reinterpret_cast<String *>(jsStrings + String_byteLength); } + String *id_byteOffset() const { return reinterpret_cast<String *>(jsStrings + String_byteOffset); } + String *id_buffer() const { return reinterpret_cast<String *>(jsStrings + String_buffer); } + String *id_lastIndex() const { return reinterpret_cast<String *>(jsStrings + String_lastIndex); } QSet<CompiledData::CompilationUnit*> compilationUnits; @@ -248,12 +366,14 @@ public: ExecutionEngine(EvalISelFactory *iselFactory = 0); ~ExecutionEngine(); - void enableDebugger(); + void setDebugger(Debugging::Debugger *debugger); void enableProfiler(); - Heap::ExecutionContext *pushGlobalContext(); - void pushContext(CallContext *context); - Heap::ExecutionContext *popContext(); + ExecutionContext *pushGlobalContext(); + void pushContext(Heap::ExecutionContext *context); + void pushContext(ExecutionContext *context); + void popContext(); + ExecutionContext *parentContext(ExecutionContext *context) const; Heap::Object *newObject(); Heap::Object *newObject(InternalClass *internalClass, Object *prototype); @@ -261,15 +381,17 @@ public: Heap::String *newString(const QString &s = QString()); Heap::String *newIdentifier(const QString &text); - Heap::Object *newStringObject(const Value &value); + Heap::Object *newStringObject(const String *string); Heap::Object *newNumberObject(double value); Heap::Object *newBooleanObject(bool b); Heap::ArrayObject *newArrayObject(int count = 0); + Heap::ArrayObject *newArrayObject(const Value *values, int length); Heap::ArrayObject *newArrayObject(const QStringList &list); Heap::ArrayObject *newArrayObject(InternalClass *ic, Object *prototype); Heap::ArrayBuffer *newArrayBuffer(const QByteArray &array); + Heap::ArrayBuffer *newArrayBuffer(size_t length); Heap::DateObject *newDateObject(const Value &value); Heap::DateObject *newDateObject(const QDateTime &dt); @@ -282,7 +404,7 @@ public: Heap::Object *newSyntaxErrorObject(const QString &message, const QString &fileName, int line, int column); Heap::Object *newSyntaxErrorObject(const QString &message); Heap::Object *newReferenceErrorObject(const QString &message); - Heap::Object *newReferenceErrorObject(const QString &message, const QString &fileName, int lineNumber, int columnNumber); + Heap::Object *newReferenceErrorObject(const QString &message, const QString &fileName, int line, int column); Heap::Object *newTypeErrorObject(const QString &message); Heap::Object *newRangeErrorObject(const QString &message); Heap::Object *newURIErrorObject(const Value &message); @@ -291,7 +413,11 @@ public: Heap::Object *newForEachIteratorObject(Object *o); - Heap::Object *qmlContextObject() const; + Heap::QmlContext *qmlContext() const; + QObject *qmlScopeObject() const; + ReturnedValue qmlSingletonWrapper(String *name); + QQmlContextData *callingQmlContext() const; + StackTrace stackTrace(int frameLimit = -1) const; StackFrame currentStackFrame() const; @@ -305,12 +431,10 @@ public: InternalClass *newClass(const InternalClass &other); - QmlExtensions *qmlExtensions(); - bool recheckCStackLimits(); // Exception handling - Value exceptionValue; + Value *exceptionValue; StackTrace exceptionStackTrace; ReturnedValue throwError(const Value &value); @@ -335,70 +459,62 @@ public: QVariant toVariant(const QV4::Value &value, int typeHint, bool createJSValueForObjects = true); QV4::ReturnedValue fromVariant(const QVariant &); - QVariantMap variantMapFromJS(QV4::Object *o); + QVariantMap variantMapFromJS(const QV4::Object *o); - bool metaTypeFromJS(const Value &value, int type, void *data); + bool metaTypeFromJS(const Value *value, int type, void *data); QV4::ReturnedValue metaTypeToJS(int type, const void *data); - void assertObjectBelongsToEngine(const Value &v); - -private: - QmlExtensions *m_qmlExtensions; + void assertObjectBelongsToEngine(const Heap::Base &baseObject); }; -inline void ExecutionEngine::pushContext(CallContext *context) +inline void ExecutionEngine::pushContext(Heap::ExecutionContext *context) { - Q_ASSERT(current && context && context->d()); - context->d()->parent = current; - current = context->d(); + Q_ASSERT(currentContext && context); + Value *v = jsAlloca(2); + v[0] = Encode(context); + v[1] = Encode((int)(v - static_cast<Value *>(currentContext))); + currentContext = static_cast<ExecutionContext *>(v); + current = currentContext->d(); } -inline Heap::ExecutionContext *ExecutionEngine::popContext() +inline void ExecutionEngine::pushContext(ExecutionContext *context) { - Q_ASSERT(current->parent); - current = current->parent; - Q_ASSERT(current); - return current; + pushContext(context->d()); } -inline -Heap::ExecutionContext::ExecutionContext(ExecutionEngine *engine, ContextType t) - : engine(engine) - , parent(engine->currentContext()) - , outer(0) - , lookups(0) - , compilationUnit(0) - , type(t) - , strictMode(false) - , lineNumber(-1) + +inline void ExecutionEngine::popContext() { - engine->current = this; + Q_ASSERT(jsStackTop > currentContext); + QV4::Value *offset = (currentContext + 1); + Q_ASSERT(offset->isInteger()); + int o = offset->integerValue(); + Q_ASSERT(o); + currentContext -= o; + current = currentContext->d(); } - -// ### Remove me inline -void Managed::mark(QV4::ExecutionEngine *engine) +void Heap::Base::mark(QV4::ExecutionEngine *engine) { Q_ASSERT(inUse()); - if (markBit()) + if (isMarked()) return; #ifndef QT_NO_DEBUG engine->assertObjectBelongsToEngine(*this); #endif - d()->setMarkBit(); - engine->pushForGC(d()); + setMarkBit(); + engine->pushForGC(this); } - -inline -void Heap::Base::mark(QV4::ExecutionEngine *engine) +inline void Value::mark(ExecutionEngine *e) { - Q_ASSERT(inUse()); - if (isMarked()) + if (!isManaged()) return; - setMarkBit(); - engine->pushForGC(this); + + Heap::Base *o = heapObject(); + if (o) + o->mark(e); } |